Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key in a relation does not need to be underlined. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a binary many-to-many relationship into a relation which of the following is true? One relation is created. Three relations are created. Two relations are created. Four relations are created. One relation is created. Three relations are created. Two relations are created. Four relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a supertype/subtype relationship which of the following is true? The subtype primary key is assigned to each supertype. There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. The supertype primary key is assigned to each subtype. The subtype primary key is assigned to each supertype. There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. The supertype primary key is assigned to each subtype. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design Well-structured relations encourage anomalies of data. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a multivalued attribute into a relation which of the following is true? Two relations are created. Three relations are created. Four relations are created. One relation is created. Two relations are created. Three relations are created. Four relations are created. One relation is created. ANSWER DOWNLOAD EXAMIANS APP
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